Bug 1747435 (CVE-2019-14823)

Summary: CVE-2019-14823 JSS: OCSP policy "Leaf and Chain" implicitly trusts the root certificate
Product: [Other] Security Response Reporter: Cedric Buissart <cbuissar>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: aakkiang, afarley, ascheel, bbuckingham, bcourt, bkearney, btotty, cbuissar, cfu, dmoluguw, edewata, elio.maldonado.batiz, gkapoor, hhudgeon, kwright, lzap, mharmsen, mmccune, nkinder, rchan, rcritten, rhcs-maint, rjerrido, rmeggins, security-response-team, tbrisker
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the "Leaf and Chain" OCSP policy implementation in JSS' CryptoManager, where it implicitly trusted the root certificate of a certificate chain. Applications using this policy may not properly verify the chain and could be vulnerable to attacks such as Man in the Middle.
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-10-16 06:51:24 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1747966, 1747967, 1747986, 1747987, 1761444    
Bug Blocks: 1746786    

Description Cedric Buissart 2019-08-30 12:38:06 UTC
When configured with the leaf and chain OCSP policy, JSS assumes that the root is trusted, and there is no attempt to validate it.
This could allow a specially crafted certificate to be accepted by the application, and could be used, for example, in Man in the Middle attacks.

Comment 2 Cedric Buissart 2019-08-30 15:07:05 UTC

Name: Alexander Scheel

Comment 8 Cedric Buissart 2019-09-10 07:52:08 UTC
Affected versions :
4.4.x : 4.4.6+
4.5.x : versions after 4.5.3
4.6.x : 4.6.0+

Comment 10 Cedric Buissart 2019-09-10 09:25:30 UTC

Red Hat Certificate System 9.4 and above use the vulnerable policy.

Red Hat Enterprise Satellite 6 does not ship a vulnerable version of the JSS library.

Comment 17 Cedric Buissart 2019-10-14 12:16:49 UTC
Created jss tracking bugs for this issue:

Affects: fedora-all [bug 1761444]

Comment 18 errata-xmlrpc 2019-10-15 17:47:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:3067 https://access.redhat.com/errata/RHSA-2019:3067

Comment 19 Product Security DevOps Team 2019-10-16 06:51:24 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 20 errata-xmlrpc 2019-10-29 14:02:34 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Extended Update Support

Via RHSA-2019:3225 https://access.redhat.com/errata/RHSA-2019:3225